液体Sb-As和Sb-Al-As合金中的元素相互作用和局部结构:从Ab Initio分子动力学和关于As聚合和扩散行为的实验研究中的洞察力
Zongbo Li1,2, Yan Feng1,2, Qiyue Wu1,2
1School of Materials Science and Engineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|April 24, 2025
概括
将添加到反融剂中可以显著改善的去除. 与形成强大的键,改变其行为,并将净化效率从67%提高到83%以上.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 金工业是金工业的一个方面.
背景情况:
- 了解融物中的元素相互作用对于炼制过程至关重要.
- (As) 是 (Sb) 中的一种杂质,需要有效的去除.
- (Al) 添加被探索作为一种方法来增强从Sb.去除As的方法.
研究的目的:
- 调查Sb-As和Sb-Al-As化的局部,元素和电子结构变化.
- 阐明添加Al影响As去除效率的机制.
- 分析Al对Sb溶液中As的结合和扩散的影响.
主要方法:
- 最初的分子动力学 (AIMD) 模拟用于研究融结构和相互作用.
- 通过真空炼制备了Sb-0.1wt%Al合金.
- 对纯的Sb和Sb-Al合金进行了区域精炼实验,以评估As的去除.
主要成果:
- 在AIMD模拟中,Sb-Al-As溶液中的其他键比其他键更强的Al-As相互作用.
- 此外,Al还破坏了Sb-As和As-As债券,促进了Al-As债券的形成并改变了As的扩散.
- 电子结构分析显示了强烈的As 4p-Al 3p轨道杂交和Al和As之间的电荷积累.
- 围绕As原子的几何配置随着Al的加入而发生了显著的变化.
结论:
- 添加与融中的有强烈的相互作用,促进其去除.
- 形成Al-As键是增强净化的关键机制.
- 添加增加了对的去除效率,从67.27%提高到83.24%.
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